Ricoh B230 Service Manual page 255

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
White level detection error
The white level cannot be adjusted within the target during auto gain
control.
Dirty exposure glass or optics section
SBU board defective
Exposure lamp defective
142 D
Lamp stabilizer defective
1. Clean the exposure glass, white plate, mirrors, and lens.
2. Check if the exposure lamp is lit during initialization.
3. Check the harness connection between SBU and BICU.
4. Replace the exposure lamp.
5. Replace the SBU board.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
144 SBU communication error
SBU connection error
The SBU connection cannot be detected at power on or recovery from
the energy save mode.
Insufficient power supply for SBU
Defective SBU
-001 D
Defective harness
Defective detection port on the BICU
1. Replace the harness.
2. Replace the SBU.
3. Replace the BICU.
-002 D SBU serial communication error
The power ON of the SBU is not detected.
SM 4-15 B230/B237